MPEG2 File Size vs DVD Capacity

[kodi1996]

I'm using TMPGEnc to make my avi's into MPEG's. I have been creating MPEGs that are about 750mb. I then import the files into Sonic's MyDVD to burn them to a dvd. The problem is MyDVD "thinks" the files are bigger than TMPGEnc (and Windows file explorer) is telling me they are. MyDVD tells me a 750mb file is going to require about 1gb of dvd space. Could some please explain what is going on here and if there is a rule of thumb about how to scale TMPGEnc file sizes so they will still fit on a DVD using MyDVD. Thanks

Dave

[MpegEncoder]

A DVD-R is 4.5 gig, so why won't 1 gig fit?

[rhegedus]

I'm probably wrong but, isn't this something to do with a 'safe mode'? A lot of players won't recognise a DVD disc unless it's got at leats 1Gb on it, so I presume my DVD is just increasing the file size to ensure compatibility.

Regards,

Rob

[unclebud]

Sounds like your making Video CD's if your working with 750mb files. A VCD video file can be larger then standard files. Over 800mb of MPG1 VCD format video can be burnt to an 80 minute CD-R.
If you are really burning DVD's then you can have a 4.4gb MPG2 (DVD format) video file. This MPG2 video file must be authored using a DVD authoring software where it will create VIDEO_TS and AUDIO_TS folders with .VOB, .BUP and .IFO files.
TMPGenc is a good DVD (MPG2 format) file converter. DVD's look better the higher the bitrate, all the way up to 9kbps. 2 hours of video encode with a constant bit rate of 4200bps will give you a file size around 4gb.
Hope you get it working right.

[furball6969]

There could be a couple reasons for this:

1, take into account that MyDVD _IS GOING TO_ convert the audio to PCM which will take up about 1.3 GB per 2 hours of video.

2, there is a switch in MyDVD that may be set to re-encode the video whether it is compliant or not. Set it to not re-encode compliant video.

3, the slight possibility that the video may not be compliant and needs to be re-encoded.